Analysis
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max time kernel
45s -
max time network
45s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
17-01-2021 17:36
Static task
static1
Behavioral task
behavioral1
Sample
update_0229c0.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
update_0229c0.exe
Resource
win10v20201028
Errors
General
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Target
update_0229c0.exe
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Size
221KB
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MD5
7cffc862f118a28123abc568072e3b10
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SHA1
fe24ef3926b8b457c4206a1d0f99f94461fe2db5
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SHA256
63e5c2fd84ec09e577c07096928b9c3e53c6341dd75f3b29a536b7ead90d872d
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SHA512
1b16e827cfbdaa7947ecbe8197f5d094f34dc75e95895a2afe8d3d2b617eab02928bccc36c6f9329078e39e3e83d8d7a6ffdc16808022c7d979467811d2723b4
Malware Config
Extracted
smokeloader
2020
http://oversun.monster/upload/
http://oversun.net/upload/
http://dingobossin.com/upload/
http://duda1.monster/upload/
http�//vinder55.monster/upload/
http://jamb2.monster/upload/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Executes dropped EXE 1 IoCs
Processes:
D76A.exepid process 1568 D76A.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\D76A.exe upx C:\Users\Admin\AppData\Local\Temp\D76A.exe upx -
Deletes itself 1 IoCs
Processes:
pid process 3048 -
Loads dropped DLL 1 IoCs
Processes:
update_0229c0.exepid process 496 update_0229c0.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
D76A.exedescription ioc process File opened for modification \??\PHYSICALDRIVE0 D76A.exe -
Checks SCSI registry key(s) 3 TTPs 9 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
msinfo32.exeupdate_0229c0.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_SANU&PROD_SANU_DVD-ROM\4&37CE57BA&0&010000 msinfo32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_&PROD_HEARTDISK\4&37CE57BA&0&000000 msinfo32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI update_0229c0.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI update_0229c0.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000\HardwareID msinfo32.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Sanu&Prod_Sanu_DVD-ROM\4&37ce57ba&0&010000\CompatibleIDs msinfo32.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_&Prod_HeartDisk\4&37ce57ba&0&000000\HardwareID msinfo32.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_&Prod_HeartDisk\4&37ce57ba&0&000000\CompatibleIDs msinfo32.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI update_0229c0.exe -
Enumerates system info in registry 2 TTPs 4 IoCs
Processes:
msinfo32.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS msinfo32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU msinfo32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\ECFirmwareMajorRelease msinfo32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\ECFirmwareMinorRelease msinfo32.exe -
Processes:
description ioc process Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" -
Modifies registry class 1 IoCs
Processes:
description ioc process Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings -
Suspicious behavior: EnumeratesProcesses 688 IoCs
Processes:
update_0229c0.exepid process 496 update_0229c0.exe 496 update_0229c0.exe 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 3048 -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
pid process 3048 -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
update_0229c0.exepid process 496 update_0229c0.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
Processes:
D76A.exedescription pid process Token: SeShutdownPrivilege 3048 Token: SeCreatePagefilePrivilege 3048 Token: SeShutdownPrivilege 3048 Token: SeCreatePagefilePrivilege 3048 Token: SeShutdownPrivilege 3048 Token: SeCreatePagefilePrivilege 3048 Token: SeShutdownPrivilege 3048 Token: SeCreatePagefilePrivilege 3048 Token: SeShutdownPrivilege 1568 D76A.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
description pid process target process PID 3048 wrote to memory of 200 3048 msinfo32.exe PID 3048 wrote to memory of 200 3048 msinfo32.exe PID 3048 wrote to memory of 1568 3048 D76A.exe PID 3048 wrote to memory of 1568 3048 D76A.exe PID 3048 wrote to memory of 1568 3048 D76A.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\update_0229c0.exe"C:\Users\Admin\AppData\Local\Temp\update_0229c0.exe"1⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Windows\system32\msinfo32.exe"C:\Windows\system32\msinfo32.exe" "C:\Users\Admin\Desktop\CloseSave.nfo"1⤵
- Checks SCSI registry key(s)
- Enumerates system info in registry
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C:\Users\Admin\AppData\Local\Temp\D76A.exeC:\Users\Admin\AppData\Local\Temp\D76A.exe1⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\D76A.exeMD5
fe169b48dcb65d058e1a3ed206e5e14e
SHA17bdce2682c8b807c6e3048d4415b545fdc6a6d0a
SHA25651925ed97ed194884c4f8972113fca707126886366b367aa00f99a95fac6045d
SHA512930d11ba0fa8b860fbfbd907ab8b4bded2d0c328a754f3ad0be07db7cc6ecb2e3b5386e038d1b38eda2ec0f555007f8b4ffcc5b4901cde423bd124d9fa3b7548
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C:\Users\Admin\AppData\Local\Temp\D76A.exeMD5
fe169b48dcb65d058e1a3ed206e5e14e
SHA17bdce2682c8b807c6e3048d4415b545fdc6a6d0a
SHA25651925ed97ed194884c4f8972113fca707126886366b367aa00f99a95fac6045d
SHA512930d11ba0fa8b860fbfbd907ab8b4bded2d0c328a754f3ad0be07db7cc6ecb2e3b5386e038d1b38eda2ec0f555007f8b4ffcc5b4901cde423bd124d9fa3b7548
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\Users\Admin\AppData\Local\Temp\CC4F.tmpMD5
50741b3f2d7debf5d2bed63d88404029
SHA156210388a627b926162b36967045be06ffb1aad3
SHA256f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c
SHA512fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3
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memory/200-7-0x0000000000000000-mapping.dmp
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memory/496-2-0x00000000053B0000-0x00000000053B1000-memory.dmpFilesize
4KB
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memory/496-5-0x0000000000400000-0x000000000040A000-memory.dmpFilesize
40KB
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memory/496-4-0x0000000000030000-0x000000000003A000-memory.dmpFilesize
40KB
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memory/1568-8-0x0000000000000000-mapping.dmp
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memory/1568-11-0x0000000004B00000-0x0000000004B01000-memory.dmpFilesize
4KB
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memory/1568-12-0x0000000004730000-0x000000000479B000-memory.dmpFilesize
428KB
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memory/1568-13-0x0000000000400000-0x000000000046F000-memory.dmpFilesize
444KB
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memory/3048-6-0x0000000001220000-0x0000000001236000-memory.dmpFilesize
88KB